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You searched for: creator:"ETO"
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[image]Plastic Poetry - ETO

Downloads: 218
[audio]ETO spring 2005 - ETO
Альбом записан во время весенней музыкальной сессии группы ЭТО в 2005 году. Участники: Владислав Цыганов - безладовый смычковый бас, ауромодулятор. Виталий Совин - электрорабаб, электроника. Вадим Беркана -бансури, китайская волынка, чакротюнер, голос...
Keywords: electroacustic; ambient; experimental; ethno
Downloads: 4,665
[audio]ETO - Winter Center [NTT039] - ETO
ETO (which stands for Experimental Tea Orchestra) is an ensemble originating from Izhevsk, Russia. Using a myriad of Asian/ethnic sounding instruments, and subtly influencing the resulting entrancing soundscapes through the use of some more modern technology, they manage to breathe interesting new life into a musical genre that had arguably been executed to death. None of what you might have heard however captures the essence quite like ETO...
Downloads: 8,936
[audio]ETO & Yohan - Himalayan tales - ETO & Yohan
Collective sound meditations in Izhevsk Tea Club. Recorded live - summer 2004. Yohan Yohanson - Auroville, India. wandering flute and dance master. "ETO - Izhevsk, Russia Experimental Tea Orchestra Коллективные звуковые медитации в Ижевском Чайном Клубе. Записано летом 2004 года. Йохан Йохансон - Ауровиль, Индия - мастер флейты и танца ЭТО - Ижевск, Россия - Эзотери...
Keywords: experimental ambient electro acustic
Downloads: 2,766 3.00 out of 5 stars3.00 out of 5 stars3.00 out of 5 stars(1 review)
[texts]Static Interactions of U(N) non-Abelian Vortices - Minoru Eto
Interactions between non-BPS non-Abelian vortices are studied in non-Abelian U(1) x SU(N) extensions of the Abelian-Higgs model in four dimensions. In addition to the usual type I/II Abelian superconductors, we find other two new regimes: type I*/II*.
Downloads: 3
[texts]Enhancement of Kondo effect in multilevel quantum dots - Mikio Eto
We theoretically study enhancement mechanisms of the Kondo effect in multilevel quantum dots. In quantum dots fabricated on semiconductors, the energy difference between discrete levels \Delta is tunable by applying a magnetic field. With two orbitals and spin 1/2 in the quantum dots, we evaluate the Kondo temperature T_K as a function of \Delta, using the scaling method. T_K is maximal around \Delta=0 and decreases with increasing |\Delta|, following a power law, T_K(\Delta)=T_K(0) (T_K(0)/|\De...
Downloads: 4
[texts]Trions in 1+1 dimensions - Minoru Eto
We consider an Abelian BF-Higgs theory with Nf=2 Higgs fields in 1+1 dimensions. We derive a new BPS-like bound and find topological solitons with tri-charges (topological charge, Q-charge and electric charge). We call them "trions."
Downloads: 4
[texts]Current induced entanglement of nuclear spins in quantum dots - Mikio Eto
We propose an entanglement mechanism of nuclear spins in quantum dots driven by the electric current. The current accompanied by the spin flip in quantum dots gradually increases components of larger total spin of nuclei. This entangled state drastically enhances the spin relaxation rate of electrons, which can be detected by measuring a leakage current in the spin-blockade region. This mechanism is not relevant in optical experiments which examine the spin relaxation of single excitations.
Downloads: 3
[texts]Electronic States and Transport Phenomena in Quantum Dot Systems - Mikio Eto
Electronic states and transport phenomena in semiconductor quantum dots are studied theoretically. Taking account of the electron-electron Coulomb interaction by the exact diagonalization method, the ground state and low-lying excited states are calculated as functions of magnetic field. Using the obtained many-body states, we discuss the temperature dependence of the conductance peaks in the Coulomb oscillation...
Downloads: 2
[audio]NDK - offering TZM BG - V_kep4eto
NDK - offering TZM BG 16.03.2011
Keywords: NDK; TZM; BG
Downloads: 13
[audio]Zeitgeist Bulgarian Chapter - Universities - V_kep4eto
TeamSpeak Conference about Universities
Keywords: Zeitgeist; Bulgarian; Chapter; Universities
Downloads: 9
[audio]The Zeitgeist Movement - Bulgaria - 30.12.2010 - V_kep4eto
The Bulgarian chapter meeting. СÑеÑа на бÑлгаÑÑÐºÐ¸Ñ ÑапÑÑÑ,в койÑо имаÑе и ÑабоÑен Ðад Ñ Ð°Ð´ÑÐµÑ : http://typewith.me/M6iD75eNTt ÐеÑе ÑпоменаÑа и инÑоÑмаÑÐ¸Ñ Ð·Ð° наглаÑÑне на Google за по-добÑа ÑабоÑа ( ÐÐÐÐÐ ÐÐÐÐÐÐÐ ) { има и оÐ...
Keywords: The; Zeitgeis; Movement; Bulgarian; chapter; 30; 12; 2010
Downloads: 11
[audio]Zeitgeist Movement International Meeting 05.01.2011 - V_kep4eto
Here is and the chat log of the meeting : http://typewith.me/MECmvTormW
Keywords: Zeitgeist; Movement; International; Meeting; 05.01.2011
Downloads: 10
[texts]Enhanced spin Hall effect by tuning antidot potential: Proposal for a spin filter - Tomohiro Yokoyama
We propose an efficient spin filter including an antidot fabricated on semiconductor heterostructures with strong spin-orbit interaction. The antidot creates a tunable potential on two-dimensional electron gas in the heterostructures, which may be attractive as well as repulsive. Our idea is based on the enhancement of extrinsic spin Hall effect by resonant scattering when the attractive potential is properly tuned...
Downloads: 3
[texts]Vortex trimer in three-component Bose-Einstein condensates - Minoru Eto
Vortex trimer is predicted in three-component Bose-Einstein condensates with internal coherent couplings. The molecule is made by three constituent vortices which are bounded by domain walls of the relative phases. We show that the shape and the size of the molecule can be controlled by changing the internal coherent couplings.
Downloads: 1
[texts]Quantum Dot Spin Filter in Resonant Tunneling and Kondo Regimes - Mikio Eto
A quantum dot with spin-orbit interaction can work as an efficient spin filter if it is connected to N (> 2) external leads via tunnel barriers. When an unpolarized current is injected to a quantum dot from a lead, polarized currents are ejected to other leads. A two-level quantum dot is examined as a minimal model. First, we show that the spin polarization is markedly enhanced by resonant tunneling when the level spacing in the dot is smaller than the level broadening...
Downloads: 2
[texts]Enhanced spin Hall effect in semiconductor heterostructures with artificial potential - Mikio Eto
We theoretically investigate an extrinsic spin Hall effect (SHE) in semiconductor heterostructures due to the scattering by an artificial potential created by antidot, STM tip, etc. The potential is electrically tunable. First, we formulate the SHE in terms of phase shifts in the partial wave expansion for two-dimensional electron gas. The effect is significantly enhanced by the resonant scattering when the attractive potential is properly tuned...
Downloads: 4
[texts]Kondo effect in coupled quantum dots under magnetic fields - Tomosuke Aono
The Kondo effect in coupled quantum dots is investigated theoretically under magnetic fields. We show that the magnetoconductance (MC) illustrates peak structures of the Kondo resonant spectra. When the dot-dot tunneling coupling $V_C$ is smaller than the dot-lead coupling $\Delta$ (level broadening), the Kondo resonant levels appear at the Fermi level ($E_F$). The Zeeman splitting of the levels weakens the Kondo effect, which results in a negative MC...
Downloads: 5
[texts]Solvable Models of Domain Walls in N=1 Supergravity - Minoru Eto
A class of exactly solvable models of domain walls are worked out in D=4 ${\cal N}=1$ supergravity. We develop a method to embed globally supersymmetric theories with exact BPS domain wall solutions into supergravity, by introducing a gravitationally deformed superpotential. The gravitational deformation is natural in the spirit of maintaining the K\"ahler invariance. The solutions of the warp factor and the Killing spinor are also obtained...
Downloads: 5
[texts]Vortex graphs as N-omers and CP(N-1) Skyrmions in N-component Bose-Einstein condensates - Minoru Eto
Stable vortex N-omers are constructed in coherently coupled N-component Bose-Einstein condensates. We classify all possible N-omers in terms of the mathematical graph theory and numerically construct all graphs for N=2,3,4,5. We also find that N-omers are well described as CP(N-1) skyrmions when inter-component and intra-component couplings are U(N) symmetric, and we evaluate their size dependence on the Rabi coupling.
Downloads: 10
[audio]TZM BG online ( live ) TeamWorkmeeting - Sofiq - V_kep4eto
Formats: *wma *mp3
Keywords: TZM; BG; TeamWorkmeeting; Sofiq
Downloads: 12
[texts]Resonant tunneling and Fano resonance in quantum dots with electron-phonon interaction - Akiko Ueda
We theoretically study the resonant tunneling and Fano resonance in quantum dots with electron-phonon (e-ph) interaction. We examine the bias-voltage ($V$) dependence of the decoherence, using Keldysh Green function method and perturbation with respect to the e-ph interaction. With optical phonons of energy $\omega_0$, only the elastic process takes place when $eV\omega_0$, the inelastic process is possible which is accompanied by real emission of phonons...
Downloads: 2
[texts]Kondo resonant spectra in coupled quantum dots - Tomosuke Aono
The Kondo effect in coupled quantum dots is investigated from the viewpoint of transmission spectroscopy using the slave-boson formalism of the Anderson model. The antiferromagnetic spin-spin coupling $J$ between the dots is taken into account. Conductance $G$ through the dots connected in a series is characterized by the competition between the dot-dot tunneling coupling $V_{C}$ and the level broadening $\Delta$ in the dots (dot-lead coupling)...
Downloads: 3
[texts]Effects of Polaron Formation in Semiconductor Quantum Dots on Transport Properties - Tomoki Tasai
We theoretically examine the effects of polaron formation in quantum dots on the transport properties. When a separation between two electron-levels in a quantum dot matches the energy of the longitudinal optical (LO) phonons, the polarons are strongly formed. The Rabi splitting between the levels is observable in a peak structure of the differential conductance G as a function of the bias voltage...
Downloads: 7
[texts]Scaling analysis of Kondo screening cloud in a mesoscopic ring with an embedded quantum dot - Ryosuke Yoshii
The Kondo effect is theoretically studied in a quantum dot embedded in a mesoscopic ring. The ring is connected to two external leads, which enables the transport measurement. Using the "poor man's" scaling method, we obtain analytical expressions of the Kondo temperature T_K as a function of the Aharonov-Bohm phase \phi by the magnetic flux penetrating the ring. In this Kondo problem, there are two characteristic lengths...
Downloads: 2
[texts]Spin splitting and Kondo effect in quantum dots coupled to noncollinear ferromagnetic leads - Daisuke Matsubayashi
We study the Kondo effect in a quantum dot coupled to two noncollinear ferromagnetic leads. First, we study the spin splitting $\delta\epsilon=\epsilon_{\downarrow}-\epsilon_{\uparrow}$ of an energy level in the quantum dot by tunnel couplings to the ferromagnetic leads, using the Poor man's scaling method. The spin splitting takes place in an intermediate direction between magnetic moments in the two leads...
Downloads: 3
[texts]Electronic States in Silicon Quantum Dots: Multivalley Artificial Atoms - Yoko Hada
Electronic states in silicon quantum dots are examined theoretically, taking into account a multivalley structure of the conduction band. We find that (i) exchange interaction hardly works between electrons in different valleys. In consequence electrons occupy the lowest level in different valleys in the absence of Hund's coupling when the dot size is less than 10 nm. High-spin states are easily realized by applying a small magnetic field...
Downloads: 8
[texts]Zero-modes of Non-Abelian Solitons in Three Dimensional Gauge Theories - Minoru Eto
We study non-Abelian solitons of the Bogomol'nyi type in N=2 (d=2+1) supersymmetric Chern-Simons (CS) and Yang-Mills (YM) theory with a generic gauge group. In CS theory, we find topological, non-topological and semi-local (non-)topological vortices of non-Abelian kinds in unbroken, broken and partially broken vacua. We calculate the number of zero-modes using an index theorem and then we apply the moduli matrix formalism to realize the moduli parameters...
Downloads: 2
[texts]Mean Field Theory of the Kondo Effect in Quantum Dots with an Even Number of Electrons - Mikio Eto
We investigate the enhancement of the Kondo effect in quantum dots with an even number of electrons, using a scaling method and a mean field theory. We evaluate the Kondo temperature $T_K$ as a function of the energy difference between spin-singlet and triplet states in the dot, $\Delta$, and the Zeeman splitting, $E_Z$. If the Zeeman splitting is small, $E_Z \ll T_K$, the competition between the singlet and triplet states enhances the Kondo effect...
Downloads: 2
[texts]Multi-parameter scaling of the Kondo effect in quantum dots with an even number of electrons - Mikio Eto
We address a recent theoretical discrepancy concerning the Kondo effect in quantum dots with an even number of electrons where spin-singlet and -triplet states are nearly degenerate. We show that the discrepancy arises from the fact that the Kondo scaling involves many parameters, which makes the results depend on concrete microscopic models. We illustrate this by the scaling calculations of the Kondo temperature, $T_K$, as a function of the energy difference between the singlet and triplet stat...
Downloads: 5
[texts]Enhancement of Kondo effect in quantum dots with an even number of electrons - Mikio Eto
We investigate the Kondo effect in a quantum dot with almost degenerate spin-singlet and triplet states for an even number of electrons. We show that the Kondo temperature as a function of the energy difference between the states Delta reaches its maximum around Delta=0 and decreases with increasing Delta. The Kondo effect is thus enhanced by competition between singlet and triplet states. Our results explain recent experimental findings...
Downloads: 3
[texts]Knotted domain strings - Minoru Eto
We construct meta-stable knotted domain strings on the surface of a soliton of the shape of a torus in 3+1 dimensions. We consider the simplest case of Z2 Wess-Zumino-type domain walls for which we can cover the torus with a domain string accompanied with an anti-domain string. In this theory, all (p,q)-torus knots can be realized as a linked pair of a(n) (un)knotted domain string and an anti-domain string.
Downloads: 7
[texts]Notes on Hilbert-Kunz multiplicity of Rees algebras - Kazufumi Eto
In this paper, we estimate the Hilbert-Kunz multiplicity of the (extended) Rees algebras in terms of some invariants of the base ring. Also, we give an explicit formula for the Hilbert-Kunz multiplicities of Rees algebras over Veronese subrings.
Downloads: 3
[texts]Ferromagnetic neutron stars: axial anomaly, dense neutron matter, and pionic wall - Minoru Eto
We show that a chiral nonlinear sigma model coupled to degenerate neutrons exhibits a ferromagnetic phase at high density. The magnetization is due to the axial anomaly acting on the parallel layers of neutral pion domain walls spontaneously formed at high density. The emergent magnetic field would reach the QCD scale ~ 10^19 [G], which suggests that the quantum anomaly can be a microscopic origin of the magnetars (highly magnetized neutron stars).
Downloads: 4
[texts]Type I Non-Abelian Superconductors in Supersymmetric Gauge Theories - Roberto Auzzi
Non-BPS non-Abelian vortices with CP^1 internal moduli space are studied in an N=2 supersymmetric U(1) x SU(2) gauge theory with softly breaking adjoint mass terms. For generic internal orientations the classical force between two vortices can be attractive or repulsive. On the other hand, the mass of the scalars in the theory is always less than that of the vector bosons; also, the force between two vortices with the same CP^1 orientation is always attractive: for these reasons we interpret our...
Downloads: 3
[texts]Josephson Current through Semiconductor Nanowire with Spin-Orbit Interaction in Magnetic Field - Tomohiro Yokoyama
We theoretically study the DC Josephson effect of a semiconductor nanowire (NW) with strong spin-orbit interaction when a magnetic field is applied parallel to the NW. We adopt a model of single scatterer in a quasi-one-dimensional system for the case of short junctions where the size of normal region is much smaller than the coherent length. In the case of single conduction channel in the model, we obtain analytical expressions for the energy levels of Andreev bound states, $E_n$, and supercurr...
Downloads: 4
[texts]Instabilities of Non-Abelian Vortices in Dense QCD - Minoru Eto
We construct a low-energy effective theory describing non-Abelian vortices in the color superconducting quark matter under stress. We demonstrate that all the vortices are radically unstable against decay into the only one type of vortices due to the potential term induced by the explicit flavor symmetry breaking by the strange quark mass. A simple analytical estimate for the lifetime of unstable vortices is provided under the controlled weak-coupling calculations...
Downloads: 16
[texts]Static Interactions of non-Abelian Vortices - Roberto Auzzi
Interactions between non-BPS non-Abelian vortices are studied in non-Abelian U(1) x SU(N) extensions of the Abelian-Higgs model in four dimensions. The distinctive feature of a non-Abelian vortex is the presence of an internal CP^{N-1} space of orientational degrees of freedom. For fine-tuned values of the couplings, the vortices are BPS and there is no net force between two static parallel vortices at arbitrary distance...
Downloads: 9
[texts]Optical Aharonov-Bohm Effect on Wigner Molecules in Type-II Semiconductor Quantum Dots - Rin Okuyama
We theoretically examine the magnetoluminescence from a trion and a biexciton in a type-II semiconductor quantum dot, in which holes are confined inside the quantum dot and electrons are in a ring-shaped region surrounding the quantum dot. First, we show that two electrons in the trion and biexciton are strongly correlated to each other, forming a Wigner molecule: Since the relative motion of electrons is frozen, they behave as a composite particle whose mass and charge are twice those of a sing...
Downloads: 11
[texts]Effective Theory on Non-Abelian Vortices in Six Dimensions - Minoru Eto
Non-Abelian vortices in six spacetime dimensions are obtained for a supersymmetric U(N) gauge theory with N hypermultiplets in the fundamental representation. Massless (moduli) fields are identified and classified into Nambu-Goldstone and quasi-Nambu-Goldstone fields. Effective gauge theories for the moduli fields are constructed on the four-dimensional world volume of vortices. A systematic method to obtain the most general form of the effective Lagrangian consistent with symmetry is proposed...
Downloads: 4
[texts]Current-Induced Entanglement of Nuclear Spins in Quantum Dots - M. Eto
We propose an entanglement mechanism of nuclear spins in quantum dots driven by the electric current accompanied by the spin flip. This situation is relevant to a leakage current in spin-blocked regions where electrons cannot be transported unless their spins are flipped. The current gradually increases the components of larger total spin of nuclei. This correlation among the nuclear spins markedly enhances the spin-flip rate of electrons and hence the leakage current...
Downloads: 2
[texts]The Shape of Instantons : Cross-Section of Supertubes and Dyonic Instantons - Heng-Yu Chen
We explore the correspondence between Yang-Mills instantons and algebraic curves. The curve is defined by Higgs zero locus of dyonic instantons in 1+4 dimensional Yang-Mills-Higgs theory, and it is identified in string theory with the cross-section of supertubes connecting parallel D4-branes. To present evidence for the identification, we show that with total charges fixed, the supertube angular momentum computed from the Higgs zero locus is maximized when the locus is circular, which has been p...
Downloads: 4
[texts]QCD String as Vortex String in Seiberg-Dual Theory - Minoru Eto
We construct a classical vortex string solution in a Seiberg-dual theory of N=1 supersymmetric SO(N_c) QCD which flows to a confining phase. We claim that this vortex string is a QCD string, as previouly argued by M.Strassler. In SO(N_c) QCD, it is known that stable QCD strings exist even in the presence of dynamical quarks. We show that our vortex strings are stable in the Seiberg-dual theory.
Downloads: 8
[texts]Solitons in Supersymmety Breaking Meta-Stable Vacua - Minoru Eto
In recently found supersymmetry-breaking meta-stable vacua of the supersymmetric QCD, we examine possible exsitence of solitons. Homotopy groups of the moduli space of the meta-stable vacua show that there is no nontrivial soliton for SU(N_c) gauge group. When U(1)_B symmetry present in the theory is gauged, we find non-BPS solitonic (vortex) strings whose existence and properties are predicted from brane configurations...
Downloads: 2
[texts]Non-BPS walls and their stability in 5d SUSY theory - Minoru Eto
We review recent work (hep-th/0404114) on non-BPS domain walls in $5d$ SUSY theory. An exact solution of non-BPS multi-walls is found in supersymmetric massive T*(CP1) model in five dimensions. The non-BPS multi-wall solution is found to have no tachyon. The N=1 supersymmetry preserved on the four-dimensional world volume of one wall is broken by the coexistence of the other wall. The supersymmetry breaking is exponentially suppressed as the distance between the walls increases.
Downloads: 4
[texts]Spin Polarization at Semiconductor Point Contacts in Absence of Magnetic Field - Mikio Eto
Semiconductor point contacts can be a useful tool for producing spin-polarized currents in the presence of spin-orbit (SO) interaction. Neither magnetic fields nor magnetic materials are required. By numerical studies, we show that (i) the conductance is quantized in units of 2e^2/h unless the SO interaction is too strong, (ii) the current is spin-polarized in the transverse direction, and (iii) a spin polarization of more than 50% can be realized with experimentally accessible values of the SO ...
Downloads: 1
[texts]Color Magnetic Flux Tubes in Dense QCD. II: Effective World-Sheet Theory - Minoru Eto
Color magnetic flux tubes appear in the color-flavor locked phase of high density QCD, which exhibits color superconductivity as well as superfluidity. They are non-Abelian superfluid vortices and are accompanied by orientational zero modes in the internal space associated with the color-flavor locked symmetry spontaneously broken in the presence of the vortex. We show that those zero modes are localized around the vortex in spite of the logarithmic divergence of its tension, and derive the low-...
Downloads: 3
[texts]Non-Abelian Global Vortices - Minoru Eto
We study topologically stable non-Abelian global vortices in the U(N) linear sigma model. The profile functions of the solutions are numerically obtained. We investigate the behaviour of vortices in two limits in which masses of traceless or trace parts of massive bosons are much larger than the others. In the limit that the traceless parts are much heavier, we find a somewhat bizarre vortex solution carrying a non-integer U(1) winding number 1/\sqrt{N} which is irrational in general.
Downloads: 4
[texts]Stability and Fluctuations on Walls in N=1 Supergravity - Minoru Eto
The recently found non-BPS multi-wall configurations in the N=1 supergravity in four dimensions is shown to have no tachyonic scalar fluctuations without additional stabilization mechanisms. Mass of radion (lightest massive fluctuation) is found to be proportional to $Lambda {\rm e}^{-\pi\Lambda R/2}$, where $\Lambda $ is the inverse width of the wall and $ R$ is the radius of compactified dimension...
Downloads: 4
[texts]Non-BPS Walls and Their Stability in 5D Supersymmetric Theory - Minoru Eto
An exact solution of non-BPS multi-walls is found in supersymmetric massive T^\star(\mathbb{CP}^1) model in five dimensions. The non-BPS multi-wall solution is found to have no tachyon. Although it is only metastable under large fluctuations, we can give topological stability by considering a model with a double covering of the T^\star(\mathbb{CP}^1) target manifold. The {\cal N}=1 supersymmetry preserved on the four-dimensional world volume of one wall is broken by the coexistence of the other ...
Downloads: 3
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